4 Color Theorem

The Four Color TheoremBy. Stella K. and Deborah K.

Algebra 2 E Block

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What is it?

An Example of the four color theorem

"In mathematics, the four color theorem, or the four color map theorem, states that given any separation of a plane into contiguous regions, called a map, the regions can be colored using at most four colors so that no two adjacent regions have the same color. Two regions are called adjacent only if they share a border segment, not just a point."
-Wikipedia- <http://en.wikipedia.org/wiki/Four_color_theorem>

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Bibliography

• "Four color theorem -." Wikipedia, the free encyclopedia. Web. 17 Jan. 2010. <http://en.wikipedia.org/wiki/Four_color_theorem>.
• "Four Color Theorem Intro." Jim Loy's Home Page (www.jimloy.com). Web. 17 Jan. 2010. <http://www.jimloy.com/geometry/4color.htm>.
• "The Four Color Theorem." Administration | www.math.gatech.edu. Web. 17 Jan. 2010. <http://people.math.gatech.edu/~thomas/FC/fourcolor.html>.
• "Four-Color Theorem -- from Wolfram MathWorld." Wolfram MathWorld: The Web's Most Extensive Mathematics Resource. Web. 17 Jan. 2010. <http://mathworld.wolfram.com/Four-ColorTheorem.html>.
• "The Math Forum - Shapiro, Color Mapping." The Math Forum @ Drexel University. Web. 17 Jan. 2010. <http://mathforum.org/~sarah/shapiro/shapiro.color.mapping.html>.